Sunday, July 26, 2015
The Crusader
The Crusader had some good features:
1. The 40mm gun.
2. Speed, and a pretty good ride over uneven terrain.
3. Armor
But tanks are, like ships at sea, a balance of:
Armor, Firepower and Speed.
It is with the firepower that the Crusader had problems.
While the 40mm (2pdr) gun was very good (with nearly the same penetrating ability of the American 37mm gun) it failed to have an HE round. This was a serious deficiency. One of the most common tricks of the Afrika Korps was to fight, and when necessary withdraw behind a screen of AT guns. A tank is a pretty good target, but AT guns are difficult to see, and more difficult to hit directly. With an HE round you could do damage to the gun and/or crew with a near miss, but not with an AP round. Without the HE rounds the British had to make a direct hit, not very likely.
In a frontal combat situation here are some penetration figures:
Crusader II vs. Pz. IIIF (its main opponent).
Turret Front: 1650 yrds.
Driver's Plate: 1650
Hull Front: 1650
Pz. IIIF vs. Crusader II
Turret Front: 1900 yds.
Driver's Plate: 950
Hull Front: 150
----------------------------------------------------
Crusader III vs. Pz. IIIJ
Turret Front: 2500 yrds.
Driver's Plate: 1800
Hull Front: 1800
Pz. IIIJ vs. Crusader III
Turret Front: 0 yds.
Driver's Plate: 1350
Hull Front: 600
----------------------------------------------------
Penetration does not always tell the whole story. When an AP round hits a tank a variety of things could result.
1. Metal fragments from the shell and the armor can fly around killing the crew.
2. Fragments might set off the ammunition, causing an explosion.
3. Fragments might kill one or two crew members, or possibly no one at all.
Source:
An OUTSTANDING BOOK - "Brazen Chariots" by Major Robert Crisp (a British tank commander in Africa - fighting not from a desk, but in "Honey's."
His tank, and others under his command were hit, and he recounts the different types of damage as a result.
The summary of this is that the Germans had a higher chance of destroying a hit tank with HE rounds than the British with AP rounds. From time to time the Germans ran out of HE rounds and had to use AP rounds, with the same disadvantage as the British had ALL the time.
People are always interested in the time it takes for a turret to traverse 360° so here it is for the Crusader:
10 seconds for a full circle. The Germans could do about the same on the Pz.IIIF. I'm not sure if the IIIF was any different, possibly not, but I cannot be sure.
The Pz. III had a three-man turret crew, as opposed to the Crusader's two. This was an advantage for the Pz. III since the Germans had a full-time loader, but the British commander also had to double as a loader.
The German tank commander had an armored cupola, an advantage that allowed him to observe while in combat, a far more risky job for the British commander without any protection.
The Pz. III had a gun elevated with gears, where as the Crusader II had a gun whose elevation was adjusted by the shoulder of the gunner pushing the rear of the gun up and down. The tightness of the up/down movement was controlled by a clamp. I cannot say if this was a plus or a minus. I would assume possibly a minus since the British eventually dropped the system. (It was probably no problem in the hands of a well trained, experienced gunner, but a problem for lesser trained personnel.)
There were mechanical problems, how serious they were I cannot say. The Germans had their problems as well, but had outstanding repair units. As Major Crisp commented, "We outnumbered the Germans, but it seemed they always had more tanks than we did." This was due to the German repair units that kept returning knocked out tanks to combat. (And remember AP rounds have less chance of starting fires or blowing up the tank, thus it was easier to repair.)
It was a better tank than it is given credit for. The main problem of the British was not the "front-line" tank, but the direction of the battle from Generals many miles away in the comfort (and ignorance) of their headquarters.
Tuesday, July 14, 2015
British Armour WWII
Matilda II
By nearly every standard the British army was much better
equipped than the German army from the beginning to the end of the war. Even
more surprising given the relentless impressions to the contrary is the fact
that the British army had more tanks per soldier than the German army and the
US forces in Europe. There was even a period when the much smaller British army
had an absolutely greater number of tanks. In the latter part of the war, most
of the tanks used by British forces came from the USA, but Britain’s own tanks,
and adaptations of the standard US tank, were probably superior to US tanks.
Some of these British tanks had the edge on German tanks too. Even if the
Germans did achieve a certain qualitative superiority in some respects, they
never achieved both qualitative and quantitative superiority.
Richard Stokes was a relentless critic of the quality of
British tanks. Oliver Lyttelton recalled that the chief parliamentary troubles
of the Ministry of Production concerned tanks, and that Dick Stokes was his
principal opponent. As Stokes put it in a debate on production in July 1942:
I should not feel comfortable if I were sitting in a British
tank with a 2-pounder gun with an effective range of 600 yards, or an even
bigger tank with a 6-pounder gun which has an effective range of 1,200 yards,
taking on a German tank with a 13 or 14-pounder gun with an effective range of
2,000 yards. A Minister who has no better to tell us than that, stands
condemned, and the Government stand condemned, and the sooner those responsible
get out the better. I want to know who was responsible for nothing being done
from the period September, 1939, to July, 1940, and who has been responsible
for apparently doing nothing from June, 1940, to the present time to bring out
something equivalent to the German Mark IV tank.
Stokes was a supporter of 80-ton tanks designed from 1939 by
a committee headed by the Great War tank design veterans. The actual design was
by Sir William Tritton and his firm William Foster of Lincoln, the man and firm
who had designed the first British tank of the previous war. The group were
labelled ‘The Old Gang’ and the prototypes therefore labelled TOG 1 and TOG 2.
In response Lyttelton accused Stokes of supporting a tank that the army did not
want, which was too slow and unreliable. Stokes continued to attack on the
issue of tanks right through the war. Such was the continuing pressure that the
government conceded a Secret Session debate on the subject in March 1944, and
after the war a parliamentary report was produced. These attacks were very
influential in creating the general perception, which endures to this day, that
there was a serious problem with British tanks.
Sir John Wardlaw-Milne complained that British tanks in
Libya were no match for the Panzer IV. British tanks were armed with the 40mm
2-pounder gun while the Panzer IV had a 75mm gun.
Although it was widely believed from 1941–2 that British tanks in North Africa were inferior to German in quantity and quality, this view was shown to be incorrect by an official history published in the 1950s, by Sir Basil Liddell Hart’s history of the Royal Tank Regiment published in 1959, and in his later work. Throughout the North African campaign between 1940 and early 1943, British forces had a two- to threefold tank advantage in medium and heavy tanks over the German forces, a figure which would be reduced somewhat by including Italian tanks, but was still overwhelming. For the November 1941 offensive (Operation Crusader) British and imperial forces in North Africa had over 300 cruisers (mostly Crusaders) and 200 infantry tanks (Matildas and Valentines), together with large numbers of light tanks, and large reserves of all types. By contrast the Germans had fewer than 174 of the comparable Panzer IIIs and IVs, and the Italians 146 13/40s, with no reserves. Operation Crusader was a success.
Yet by early 1942 the Germans and Italians had
counterattacked and were deep into Egypt. Their tank forces were still
comparatively weak: at the end of August 1942 the Germans had only 166 Panzer
IIIs and 37 Panzer IVs. On the eve of the Second Battle of El Alamein, which
started the definitive rout of the Germans and Italians, they had 172 Panzer
IIIs and 38 Panzer IVs fit for battle, as well as 278 Italian tanks. This
compared with over 900 fit medium tanks with British forces, of which 488 were
of British manufacture.
What the qualitative difference was between the tanks is
very difficult indeed to establish, but the picture presented by critics in
Parliament in 1942 in particular, and echoed ever since, is deeply flawed. That
all British tanks in the Middle East had the 40mm 2-pounder gun until late 1942
is broadly correct, but the idea that many German tanks carried a much more
powerful 75mm gun from around 1940 is misleading. The Panzer IV did have a 75mm
gun, but it was a low-velocity gun firing high explosive. This turned out to be
a very useful feature for a tank gun, which the British and Americans adopted
by using a dual-purpose 75mm gun (as mounted in the Sherman and later in other
tanks). But in regard to tank-mounted anti-tank guns the Panzers were no better
equipped than British tanks. In North Africa up to May 1942 Panzer IIIs, which
in contrast to the Panzer IVs did have anti-tank guns, had 50mm (short)
anti-tank guns, which were no better than the 40mm 2-pounder.
The other side of
the equation was the armour. One study suggests that in 1941 all the main
British tanks (Valentines, Matildas, Crusaders) and the US Grant were superior
to any available German type in North Africa. Up-armoured Panzer IIIs capable
of resisting British tank guns only started arriving in December 1941.
Where German forces had an early advantage was in the
non-tank long 50mm anti-tank gun and in the very small numbers of 88mm
anti-aircraft guns used as anti-tank weapons. Britain did not introduce a
dual-purpose anti-tank/anti-aircraft gun of the 88mm sort but it had plenty of
94mm (3.7in) anti-aircraft guns. By May 1942 there were 100 6-pounder 57mm
anti-tank guns with British forces in the Middle East. This was a successful
anti-tank gun, which following its production in the United States became the
standard anti-tank gun for US forces too.
Superior German tanks appeared in North Africa in the spring
of 1942, but in small numbers. In May 1942 the new long-barrelled 50mm gun was
first deployed on German tanks in Africa; and the long-barrelled 75mm gun in
June 1942. In August 1942 there were 73 of the former on Panzer IIIs and 27 of
the latter on the IVs. At the Second Battle of El Alamein there were 88 Panzer
IIIs with the long 50mm and 30 Panzer IVs with the long 75mm. Improved British
tanks were not far behind and arrived in quantity. In June 1942 the first 57mm
6-pounder Crusader arrived, of which 78 were fit in late October 1942. This gun
was more effective as an anti-tank weapon than the US 75mm dual-purpose gun
and, at least in later versions, as effective as the German long 75mm gun as well
and would be used in tanks to the end of the war. The summer of 1942 also saw
the arrival of very large numbers of Sherman tanks from the USA, armed with a
75mm long anti-tank/HE gun. Three hundred had been offered to Churchill in June
1942, and were put on seven ships in July, one of which was lost, but the tanks
were replaced. By 11 September, 318 had arrived. In other words, if there was a
German superiority in tank gun and armour quality it was very small and very
short-lived indeed.
The old view espoused by Basil Liddell Hart that the British
army was reluctant to embrace the tank has been decisively criticized by
historians who now suggest the British army overemphasized the use of the tank,
especially independently of infantry. British armoured divisions were, as of
1940, very tank-heavy, and based on the idea of fighting tanks with tanks
equipped with anti-tank guns.
Between April 1940 and May 1942 British armoured
divisions had two armoured brigades, artillery and engineers, and very little
infantry. Their medium tank strength was 300, three times that of a
contemporary panzer division. From May 1942 until the end of the war one
armoured brigade (150-plus medium tanks) was replaced with a whole infantry
brigade, and the artillery increased.
However, the armoured division was still
thought of primarily as a weapon for fighting tank formations, with the
infantry there to help the tanks. Only in 1942 and 1943, with experience from
North Africa, was the role of the tank downgraded. This led to the recognition
of the need to have tanks designed to attack things other than tanks, expressed
in the introduction of the Sherman and its dual-purpose gun.
Of particular concern to some was the new heavy tank named
after Churchill himself, which also had the 40mm 2-pounder gun. Oliver
Lyttelton, in his poorly received speech, developed a defence which depended on
the story of a profound weakness in British tank forces: ‘We started the war
with no modern tanks, we lost all the armoured equipment which we had in France
in June, 1940, although that equipment would by itself have had little value
today.’ Lyttelton’s argument was that
lots of tanks were needed quickly, and that had meant deciding to produce the
Churchill tank with its 2-pounder even though the tank had not yet been made or
tested. High levels of production and high quality did not go together.
Churchill, in a brilliant winding-up speech, also made great
play of the weakness of British arms in 1940, especially tanks, attacking one
of his antagonists in 1942, the Secretary for War responsible for tanks to
early 1940, Leslie Hore-Belisha. He also insisted, as he had in earlier
speeches, on the massive growth in British arms production since 1940, a point
on which he was undoubtedly correct.
He noted the huge amount of materiel which
went to the Middle East: ‘from this country, from the Empire overseas and to a
lesser extent from the United States, more than 950,000 men, 4,500 tanks, 6,000
aircraft, nearly 5,000 pieces of artillery, 50,000 machine guns and over
100,000 mechanical vehicles’. According to Churchill about 2,000 tanks had been
sent to the Soviet Union. In his view the losses in the Middle East were not
due to failures in production.
The critiques of early and mid-1942 were to cease with the
reversal of British fortunes in the Middle East in the autumn. The 8th Army
under Montgomery, supplied with huge quantities of equipment, including Sherman
tanks and lorries from the USA, overwhelmed the weak German and Italian forces
at the Second Battle of El Alamein. The imperial army marched west to meet up
with US forces which had landed in Morocco, and the mostly British 1st Army, in
Tunisia. In a great and conclusive victory in early 1943 North Africa was
cleared with vast numbers of Germans captured, causing losses to Germany
comparable to those of Stalingrad at a tiny fraction of the cost in lives.
Churchill survived and prospered, never to be under such pressure again.
Complaints about the quality of British tanks died away, though Stokes would
take up the fight again in 1944.
VEHICLE NOMENCLATURE – USA
M4A3E8 Sherman "Easy Eight"
In America a much more rational designation
system was used. In the project, design, and development stages, a vehicle was
given a designation in the T series (best remembered as T for Test). Thus a
vehicle might be designated T89. Any experimental modification was indicated by
a suffix in the E series (E for Experimental). Thus T1E1, T25E1, or T20E3, in
the latter case the "3" indicating the third experimental modification.
"T" numbers were normally allocated chronologically. When fully
accepted for service by the using arms, the vehicle was
"standardised" and given a designation in the M series. Thus M6 or
M8. It was not usual for the M number to bear any relation to the original T
designation, but towards the end of the war there was a change in favour of
this in an attempt to avoid confusion. Thus the Light Tank T24 became the M24
on standardisation, for example. In rare instances a design was standardised
from the "drawing board" and never received a T designation; an
example was the Medium Tank M3. There were also many instances where vehicles
were put into limited production and service before being standardised, and in
some cases they never achieved the status of standardisation -an example being
the T23 medium tank.
At this stage it must be emphasised that
this system of designation was used for every item of military equipment in the
US Army, so that it was possible to have an M3 Medium tank, an M3 Light tank,
an M3 gun mount, an M3 rifle, an M3 flame-gun, an M3 gun sight and so on. Thus
it was normal practice to qualify each item by its full title. Strictly
speaking, therefore, it is necessary to say Light Tank M3 to distinguish it
from Medium Tank M3 and so on, was indicated by an "A" suffix. An
example of this is seen clearly in the Medium Tank M4 series, where engine and
other changes gave rise to the M4A1, M4A2, M4A3 etc. Modifications confined to
the chassis only were indicated by a "B" series suffix. An example
arises in M7 howitzer motor carriage development. The M7 was based on the M3
medium tank chassis, and the same design based on the M4A3 chassis became the
M7B2. Had yet another chassis been used subsequently, the designation would
have been M7B2, and so on. The "E" series suffix was rarely retained
when a design was standardised, but there were exceptions, one such being
Assault Tank M4A3E2. It should be borne in mind that any special purpose
equipment carried on American tanks was designated separately but following the
same system. Thus an M4A1 tank could be seen fitted with an MI dozer blade or a
T34 rocket launcher, etc.
Self-propelled artillery in American
service was described by the calibre of the weapon with the term
"gun/howitzer/ mortar motor carriage" as appropriate. Example: 105mm
Howitzer Motor Carriage M37. Other special purpose vehicles were designated
similarly to tanks. Example: Tank Recovery Vehicle T1. Names were not
officially used for American tanks until the M26 heavy tank was called the
Pershing. Before that, however, British names for American equipment (eg,
Sherman, Lee) were being used colloquially in American service and some
American vehicles had unofficial but commonly used names, such as Hellcat for
the M18 GMC or Jumbo for the M4A3E2 assault tank.
Instead of being classified as
"standard" equipment, American AFVs were sometimes classified
"limited standard". This category was given to a vehicle which was
not fully satisfactory for universal service, but which could be used when
necessary. A further classification was "substitute standard",
usually given to obsolescent or expedient equipment due for early replacement
but which could still be used pending availability of the new design. Finally
there was the "limited procurement" classification given to vehicles
for which only restricted use could be foreseen. As the term implies, such
vehicles were usually produced only in small quantities. Classification could,
of course, be changed as necessary for any given vehicle type.
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